20103201321 has 8 divisors (see below), whose sum is σ = 30633449664. Its totient is φ = 11487543600.

The previous prime is 20103201311. The next prime is 20103201353. The reversal of 20103201321 is 12310230102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20103201321 - 2³³ = 11513266729 is a prime.

It is a super-2 number, since 2×20103201321² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20103201321.

It is not an unprimeable number, because it can be changed into a prime (20103201311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478647630 + ... + 478647671.

It is an arithmetic number, because the mean of its divisors is an integer number (3829181208).

Almost surely, 2^20103201321 is an apocalyptic number.

20103201321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20103201321 is a deficient number, since it is larger than the sum of its proper divisors (10530248343).

20103201321 is an equidigital number, since it uses as much as digits as its factorization.

20103201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957295311.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20103201321 its reverse (12310230102), we get a palindrome (32413431423).

The spelling of 20103201321 in words is "twenty billion, one hundred three million, two hundred one thousand, three hundred twenty-one".